Use caching to run tests and report coverage #3575

Job	Run time
docs (./packages/autogen-core)	1m 40s
format	1m 0s
lint	53s
mypy (./packages/autogen-core)	2m 29s
pyright (./packages/autogen-core)	55s
mypy (./packages/autogen-magentic-one)	1m 28s
pyright (./packages/autogen-magentic-one)	57s
test (./packages/autogen-core)	59s
mypy (./packages/agbench)	57s
pyright (./packages/agbench)	53s
test (./packages/autogen-magentic-one)	1m 53s
mypy (./packages/autogen-ext)	2m 10s
pyright (./packages/autogen-ext)	1m 0s
test (./packages/autogen-ext)	3m 11s
mypy (./packages/autogen-agentchat)	1m 20s
pyright (./packages/autogen-agentchat)	1m 6s
test (./packages/autogen-agentchat)	1m 17s
mypy (./packages/magentic-one-cli)	1m 21s
pyright (./packages/magentic-one-cli)	1m 1s
check-proto-changes-python	1m 8s
markdown-code-lint	2m 10s
docs-example-check (./packages/autogen-core)	3m 1s
samples-code-check	58s
codecov (./packages/autogen-core)	4s
codecov (./packages/autogen-magentic-one)	6s
codecov (./packages/autogen-ext)	3s
codecov (./packages/autogen-agentchat)	4s
	34m 4s

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